Propylene oxide purification
AssigneeArco Chemical Technology, L.P.
InventorsAhmad Soltani-Ahmadi, Thomas C. Mullin
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Abstract
Activated carbon to be used in the removal of impurities from propylene oxide is first pre-wetted with a glycol such as propylene glycol; after bed deactivation, water containing a basic catalyst is added to hydrolyze propylene oxide and to form a non-hazardous slurry of carbon, propylene glycol and water.
Claims7
In a process for the removal of impurities from propylene oxide by contact with activated carbon, the improvement which comprises pre-wetting the activated carbon with a glycol prior to the contact with propylene oxide.
The process of claim i wherein the carbon bed is pre-wetted with at least 50 wt % propylene glycol based on the weight of carbon.
Dependencies are inferred from the claim text.